Home / 2,679.10-4,015.05-1,908.70

Finding the Fourth Proportional to 2,679.10, 4,015.05 and 1,908.70

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Solution

The fourth proportional to 2,679.10, 4,015.05 and 1,908.70 is: 2,860.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.10 : 4,015.05 = 1,908.70 : x
  2. Step 2: Convert to fraction form
    2,679.10/4,015.05 = 1,908.70/x
  3. Step 3: Cross multiply
    2,679.10x = 4,015.05 × 1,908.70
  4. Step 4: Simplify right side
    2,679.10x = 7,663,525.94
  5. Step 5: Solve for x
    x = 7,663,525.94/2,679.10
  6. Step 6: Final answer
    x = 2,860.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.